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• Error converting youtube video to gif using npm

  15 décembre 2015, par user5663488

  I have installed ffmpeg and node.js. Trying to convert youtube video to gif images. In command prompt I have used "youtube-to-gif -u https://www.youtube.com/watch?v=NqxSgp385N0 -b 30 -d 5" command. Its showing error "Cannot find ffmpeg". Please suggest.

  This image displays the error while using the above command

• Missing one frame between two .ts files

  15 décembre 2015, par ideawu

  I have 2 files: fileSequence0.ts and fileSequence1.ts, I use ffmpeg to inspected the number of frames of each file, the result is:

  • fileSequence0.ts, 29 frames
  • fileSequence1.ts, 28 frames

  Then I concat the 2 files into one:

  ffmpeg -i 'concat:fileSequence0.ts|fileSequence1.ts' -codec copy merge.mp4
  

  Now, merge.mp4 has 58 frames, not 57 = 29 + 28, what's that about, can any one point out what knowlege I am missing?

  The files mentioned here can be download at: https://github.com/ideawu/missing-frame-between-ts

• (ffmpeg) avcodec_find_encoder_by_name("libx264") fails

  15 décembre 2015, par fandyushin

  avcodec_find_encoder_by_name("libx264") return NULL.

  FFmpeg was configured with flags --enable-gpl and --enable-libx264

  ffmpeg -codecs | grep 264 returns DEV.LS h264 H.264 / AVC / MPEG-4 AVC / MPEG-4 part 10 (decoders: h264 h264_vda ) (encoders: libx264 libx264rgb )

  I need to create libx264 encoder,. Where is my fault? How to init AVCodec with libx264 codec.

  AVCodec *encoder = avcodec_find_encoder_by_name("libx264");
  if (!encoder) {
    av_log(NULL, AV_LOG_FATAL, "Necessary encoder not found\n");
    exit(EXIT_FAILURE);
  }
  

  Thanks!

• how to install ffmpeg for pycharm

  15 décembre 2015, par D. Adams

  I am trying to turn a set of images into a video and ffmpeg was recommended to me as a good way of doing this.
  However I am having a lot of difficulties getting ffmpeg to work. Specifically in pycharm.

  I have tried using the python version of ffmpeg from this website https://github.com/mhaller/pyffmpeg but I just cant seem to get it properly installed.
  Can someone please outline a specific set of steps to get ffmpeg working in pycharm?

• FFmpeg Live Stream - Loop Video ?

  15 décembre 2015, par Dread-Eye

  I am trying to stream a video loop to justin.tv using FFmpeg? I have managed to loop an image sequence and combine it with line in audio:

  ffmpeg -loop 1 -i imageSequence%04d.jpg -f alsa -ac 2 -ar 22050 -ab 64k \
    -i pulse -acodec adpcm_swf -r 10 -vcodec flv \
    -f flv rtmp://live.justin.tv/app/
  

  Is it possible to do this with a video file?